Oct 15, 2025 · Nausea and Upset Stomach: Benadryl can cause general stomach upset, nausea, and indigestion, especially when taken without food. Long-Term Concerns: Chronic use may potentially …

Feb 21, 2024 · Benadryl, which is used to treat allergies, can cause side effects. Learn about its more common, mild, and serious side effects and how to manage them.

Using Benadryl for an upset stomach is generally not recommended. Its anticholinergic effects can slow gut motility, potentially worsening symptoms like bloating or constipation.

Dec 15, 2025 · Benadryl can cause drowsiness and should not be used when driving. Taking large doses of Benadryl can lead to serious health issues like cardiac arrest and death. People with …

Oct 3, 2025 · Benadryl side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Abdominal pain is reported as a side effect among people who take Benadryl (diphenhydramine hydrochloride), especially for people who are female, 60+ old, have been taking the drug for < 1 …

Mar 10, 2024 · Benadryl is a medication that can help some people with GERD (GERD) symptoms by reducing inflammation or allergic reactions. It is important to avoid certain medicines and dietary …

Oct 20, 2025 · Yes, Benadryl can cause stomach upset, including constipation and nausea. Learn how diphenhydramine affects your gut and what to do if you experience these side effects.

Jun 12, 2025 · Common antihistamine side effects include drowsiness, dizziness, and headache. Constipation, blurry vision, and dry mouth are also frequently reported. Rare but serious …

Oct 10, 2025 · Take Benadryl with food if possible, especially if you are prone to stomach upset or are concerned about side effects. Start with a low dose and gradually increase as needed and under …